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| EX355P - Description and Specifications |
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Overview
The EX355P has been designed to meet the requirement
for a low-cost dc power supply that can be remotely controlled using an RS-232 interface.
A simple remote interface is provided which can be used to set voltage and current levels and operate the output on/off.
Status monitoring enables actual current or actual voltage to be read back together with the operational mode (constant voltage or constant
current).
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The RS-232 interface is fully opto-isolated from the power supply output
thus eliminating any restrictions on how the output is connected.
Front panel rotary encoders allow the units to operated as conventional bench power supplies. Front panel control can be locked out when using
remote control.
The EX355P uses mixed mode regulation with a switch-mode pre-regulator followed by a
linear post regulator. It can provide 175 watts and is an extension to the highly successful
EX series of
dc bench power supplies (see separate data).
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EX series - full range |
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Single Output |
| EX355 |
35V/5A |
175
watts |
| EX355P |
35V/5A |
175
watts |
| EX1810R |
18V/10A |
180 watts |
| EX4210R |
42V/10A |
420 watts |
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Dual Output |
| EX354D |
2 x 35V/4A |
280 watts |
| EX752M |
2 x
75V/2A or 1 x 75V/4A or 1 x 150V/2A |
300 watts |
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Triple
Output |
| EX354T |
2 x 35V/4A + 5V/5A |
305 watts |
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SPECIFICATIONS
MAIN OUTPUTS
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Operating Mode
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Constant voltage or constant current with
automatic cross-over and indication.
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Voltage Setting
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0V to >rated O/P by coarse and fine
controls.
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Current Setting
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0A to >rated O/P by single logarithmic
control.
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Load regulation
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<0.01% of max. O/P for a 90% load change.
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Line regulation
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<0.01% of max. O/P for a 10% line voltage
change.
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Output impedance
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Typically <5mW in constant voltage mode.
Typically >50kW in constant current mode.
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Ripple & Noise (20MHz bandwidth)
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Typically
<2mV rms (CV mode).
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Transient Response
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<20µs to within 50mV of set
level for 90% load change.
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Temp. Coefficient
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Typically <100ppm/oC.
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Output Protection
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Outputs will withstand forward voltages
above the rated output voltage. Reverse protection by diode clamp for currents
up to 3A.
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Status Indication
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Output ON lamps. Constant current lamps.
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Output Switch
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Electronic. Preset voltage and current
displayed when output is off.
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Output Terminals
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4mm terminals on 19mm (0.75") pitch .
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METERS
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Meter Types
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Separate 4 digit meter for voltage & 3 digit
meter for current with 14mm (0.56") LED displays. Reading rate 4/sec.
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Meter Resolutions
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10mV, 10mA.(100mV in CC mode)
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Meter Accuracies
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Voltage 0.3% ±2 digit. Current 0.6% ±2
digit.
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REMOTE CONTROL
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Interface
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RS-232 interface, fully opto-isolated from power supply output. 9-pin D connector.
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Baud Rate
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Variable from 600 baud to 9,600 baud.
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Remote Functions
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Set Voltage, Set Current, Set Output On/Off, Read Voltage, Read Current, Read On/Off,
Read Mode (CV or CC).
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Setting Accuracy
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Voltage 0.3% ±20mV. Current 0.6% ±20mA.
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Setting Resolution
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Voltage 10mV. Current 10mA.
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Readback Accuracy
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Voltage 0.3% ±100mV. Current 0.6% ±20 mA.
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Readback Resolution
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Voltage 100mV. Current 10mA.
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COOLING
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Convection cooling (silent operation).
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POWER
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AC Input
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230V ±14% AC, 50/60Hz. (115V to
order) Installation Category II. 300VA max.
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SIZE AND WEIGHT
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Size
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140 x 320 x 160 mm (WxDxH)
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Weight
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3.0kg.
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ENVIRONMENTAL
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Operating Range
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+5oC to +40oC, 20% to 80%
RH.
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Storage Range
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-40oC to + 70oC.
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Environmental
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Indoor use at <2000m, Pollution Degree 1.
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Safety
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Complies with EN61010-1.
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EMC
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Complies with EN61326.
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Thurlby
Thandar Instruments Ltd. operates a policy of continuous development and
reserves the right to alter specifications
without prior notice.
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Thurlby Thandar Instruments
Limited
Glebe Road, Huntingdon, Cambridgeshire PE29 7DR United Kingdom
Tel: +44 1480 412451 Fax: +44 1480
450409 Web: www.tti-test.com Email:
sales@tti-test.com |
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Single output mixed-mode regulation, 0 to
35V at 0 to 5A
